作者:Lijun Lu、Renyi Shi、Luyao Liu、Jingwen Yan、Fangling Lu、Aiwen Lei
DOI:10.1002/chem.201602791
日期:2016.10.4
compounds is an attractive prospect in organic synthesis. In particular, the combination of C(sp3)−H activation and oxidative carbonylation involving alkanes and CO gas is a promising and efficient method to synthesize carbonyl derivatives. However, due to the high C−H bond dissociation energy and low polarity of unactivated alkanes, the carbonylation of unactivated C(sp3)−H bonds still remains a great challenge
A recyclable CO surrogate in regioselective alkoxycarbonylation of alkenes: indirect use of carbon dioxide
作者:P. H. Gehrtz、V. Hirschbeck、I. Fleischer
DOI:10.1039/c5cc05012j
日期:——
Herein, we report a Pd-catalysed alkoxycarbonylation of alkenes based on the use of a recyclable CO2reduction product, the crystalline and air-stableN-formylsaccharin, as a CO surrogate.
recourse to fluorous biphase technology. The fluoroalkyldistannoxane catalysts enable transesterification in FC-72 solvent to furnish 100% yields of the desired esters by use of reactants ester and alcohol in a 1 : 1 ratio. The catalysts also work in FC-72/organic solvent system as well as in toluene alone. A number of esters and alcohols bearing various functional groups are employable. The catalysts can
Novel ruthenium-catalyst for hydroesterification of olefins with formates
作者:Irina Profir、Matthias Beller、Ivana Fleischer
DOI:10.1039/c4ob01246a
日期:——
An alternative ruthenium-based catalyst for the hydroesterification of olefins with formates is reported. The good activity of our system is ensured by the use of a bidentate P,N-ligand and ruthenium dodecacarbonyl. A range of formates can be used for selective alkoxycarbonylation of aromatic olefins. In addition, the synthesis of selected aliphatic esters is realized. The proposed active ruthenium complex has been isolated and characterized.
70 years, numerous catalyst systems have been developed that allow for highly linear-selective (anti-Markovnikov) reactions and are used in industry to produce linear carboxylates starting from olefins. In contrast, a general catalyst system for Markovnikov-selective alkoxycarbonylation of aliphatic olefins remains unknown. In this paper, we show that a specific palladiumcatalyst system consisting